Black hole seen expelling jet in first direct image captured


Astronomers revealed the first image showing a jet being expelled from a black hole’s outer boundary.

The black hole, which is 6.5 billion times larger than the sun, is at the center of galaxy Messier 87, located 55 million light years away from Earth.

FIRST IMAGE OF A BLACK HOLE REWORKED WITH ARTIFICIAL INTELLIGENCE

A view of the jet and shadow of M87’s black hole
  This image shows the jet and shadow of the black hole at the centre of the M87 galaxy together for the first time. The observations were obtained with telescopes from the Global Millimetre VLBI Array (GMVA), the Atacama Large Millimeter/submillimeter Array (ALMA), of which ESO is a partner, and the Greenland Telescope. This image gives scientists the context needed to understand how the powerful jet is formed. The new observations also revealed that the black hole’s ring, shown here in the inset, is 50% larger than the ring observed at shorter radio wavelengths by the Event Horizon Telescope (EHT). This suggests that in the new image we see more of the material that is falling towards the black hole than what we could see with the EHT. 

“The bigger and thicker ring we now see shows that the material falling into the black hole contributes significantly to the observed emission in the new image, which allows us to better understand the physical processes near the black hole,” Ru-Sen Lu, the team leader of the Max Planck Research Group at the Shanghai Astronomical Observatory of the Chinese Academy, said in a statement.

Some of the brightest light produced in the universe comes from powerful jets, and these images could help experts investigate how black hole jets are formed.

In April 2019, scientists published the first image of a black hole in M87 using data from 2017 captured by the Event Horizon Telescope, a system of eight synchronized radio observatories that combine as one telescope and is designed to observe light in relation to black holes, according to the EHT webpage.

Now, a separate team of researchers made observations using telescopes from the Global Millimetre VLBI Array, the Atacama Large Millimeter/submillimeter Array, and the Greenland Telescope.

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The international team of scientists from the Shanghai Astronomical Observatory of the Chinese Academy of Sciences published the study in Nature on Wednesday.

“The spectacular image of the jet and ring in M87 is an important milestone, culminating in many years of collaborative efforts by our colleagues in Europe, including ESO, IRAM, Metsähovi, Yebes and Onsala, to align the GMVA array with phased ALMA for joint observations to reveal the finest details in the study of radio galaxies and quasars,” said research team member Eduardo Ros, a scientist at MPIfR and a European GMVA scheduler.

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